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Der gleichzeitige Betrieb mehrerer Gast-Betriebssysteme auf einem einzigen physischen Rechner unter einem Host-Betriebssystem ist eine leistungsfähige moderne Entwicklung. Bekannte Beispiele sind VMware für die IA32-Architektur sowie das Betriebssystem z/VM und die PR/SM-LPAR Einrichtungen der zSeries-Architektur. Die Nutzung eines Betriebssystems als Gast bedingt einen Leistungsverlust. Die als Partitionierung bezeichnete Zuordnung von Systemressourcen zu den einzelnen Gast-Betriebssysteme ist schwierig, wenn eine dynamische Anpassung an sich ändernde Lastprofile erforderlich ist. Diese Probleme lassen sich mittels Erweiterungen der Hardwarearchitektur adressieren, sowie durch Softwarestrukturen, welche diese Erweiterungen nutzen. Die Erweiterungen der Hardwarearchitektur gehen über das hinaus, was auf heutigen Rechnerarchitekturen wie IA32 oder Mips verfügbar ist. Der vorliegende Beitrag erläutert den optimalen Betrieb von Gast-Betriebssystemen und die begleitenden Partitionierungsmöglichkeiten auf der zSeries-Plattform und beschreibt die zusätzlichen Hardware- und Software-Einrichtungen, welche dies ermöglichen. 相似文献
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Nature Publishing Group and the Alliance for Cellular Signaling formed a partnership in 2001 to develop a comprehensive website for researchers in the field of cellular signalling. This website aimed to evolve the traditional form of publication (an article with supplementary information and links) into something that made better use of web and database technologies, and provided more value to scientists. This article gives an overview of the project, some of the thinking behind it, and how it has developed. 相似文献
4.
Christian von Sikorski 《Communication Research Reports》2018,35(2):162-171
Reports about political scandals have increased lately. Yet the general impact of news visuals and the specific role of lightness and darkness cues in images of scandalized politicians remain unclear. With the help of an experiment, the present pilot study examined the influence of candidate images and the effects of particular image backgrounds (light versus dark). While the foreground of the image depicting a politician involved in a scandal remained unchanged, the background was systematically altered. The results revealed that a light background had a positive effect on recipients’ attitudes toward the politician. In contrast, participants exposed to a dark image background demanded a more severe punishment for the politician. 相似文献
5.
Puolakanaho A Ahonen T Aro M Eklund K Leppänen PH Poikkeus AM Tolvanen A Torppa M Lyytinen H 《Journal of learning disabilities》2008,41(4):353-370
The authors examined second grade reading accuracy and fluency and their associations via letter knowledge to phonological and language predictors assessed at 3.5, 4.5, and 5.5 years in children in the Jyv?skyl? Longitudinal Study of Dyslexia. Structural equation modeling showed that a developmentally highly stable factor (early phonological and language processing [EPLP]) behind key dyslexia predictors (i.e., phonological awareness, short-term memory, rapid naming, vocabulary, and pseudoword repetition) could already be identified at 3.5 years. EPLP was significantly associated with reading and spelling accuracy and by age with letter knowledge. However, EPLP had only a minor link with reading fluency, which was additionally explained by early letter knowledge. The results show that reading accuracy is well predicted by early phonological and language skills. Variation in fluent reading skills is not well explained by early skills, suggesting factors other than phonological core skills. Future research is suggested to explore the factors behind the development of fast and accurate decoding skills. 相似文献
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Based on the Job Demands-resources (RD-R) model, the aim of the current study was to examine how pressure arising from imposed curriculum changes and teacher self-efficacy relate to perceived stress in teachers. Participants (839 teachers working in English schools) completed an online survey that contained questions about demographics, self-reported pressure from imposed curriculum changes, teacher self-efficacy, and perceived stress. Pressure from imposed curriculum changes was positively, and teacher self-efficacy negatively, related to perceived stress. Teacher-self efficacy moderated relations between pressure from imposed curriculum changes and perceived stress. High teacher self-efficacy was associated with lower perceived stress, relative to low teacher self-efficacy, when pressure from imposed curriculum changes was low. The differential advantage offered by high self-efficacy declined as pressure from imposed curriculum changes increased. 相似文献
8.
Timo Jokela 《The International Journal of Art & Design Education》2007,26(3):238-250
The purpose of this article is to describe how the Department of Art Education at the University of Lapland in Finland has developed winter art as a method of environmental and community‐based art education. I will focus on the Snow Show Winter Art Education Project, a training project funded by the European Union and the State Provincial Office of Lapland. The general aim of the project was to increase the know‐how of winter art in Northern Finland. This goal was put into practice through workshops on snow construction, documentation of winter art, winter‐oriented media production, and snow and ice sculpting; through continuing education seminars, workshops, and school projects for teachers; and through public lectures and seminars on winter and winter art. In this article, I describe the challenges that winter offers to community and environment‐based art education in the North. Further, I introduce the methods of implementation and the outcomes of winter art exercises carried out by several schools in Lapland in cooperation with and inspired by the Snow Show Winter Art Education Project. 相似文献
9.
Megan von Spreckelsen Emma Dove Ilse Coolen Annelot Mills Ann Dowker Kathy Sylva Daniel Ansari Rebecca Merkley Victoria Murphy Gaia Scerif 《Mind, Brain, and Education》2019,13(4):326-340
Developmental cognitive neuroscience highlights the importance of interactions between children and their environment. As young children spend increasing time in childcare, it is key to investigate the impact of “maths‐talk” and maths provisions in preschools. Qualitative insights from early educators indicate a greater bias toward counting activities than would be expected given the Early Years curriculum. In addition, we quantified the observed breadth of preschool practitioners' maths language (e.g., place‐value language), setting‐based maths provisions (e.g., quality of maths‐related activities), and their relation with children's early numeracy skills. In settings with greater practitioners' breadth of maths language, children display greater cardinality skills although our data call for the further investigation of parental socioeconomic status and education. We conclude with a discussion on the need to operationalize children's maths learning environments as diversely as possible. Enriching practitioners' skill sets may be an effective and needed way of improving early maths outcomes. 相似文献
10.
Sven Ismer Manuela Beyer Carolina Solms-Baruth Christian von Scheve 《Soccer & Society》2017,18(4):554-574
Understanding the social consequences of major soccer events is important for social science researchers and policy-makers alike. On the one hand, socially integrative effects are ascribed to these events. On the other hand, they are suspected of increasing the devaluation of minorities and disadvantaged groups. Sociological theories in a Durkheimian tradition suggest that the emotional entrainment that goes along with football-related rituals might play a role. We thus investigated the effects of the World Cup 2010 on the derogation of minorities and disadvantaged groups in Germany and hypothesized that the emotional entrainment is a predictor of changes in derogation. Results of our naturalistic study show significant increases in derogative attitudes after the World Cup. Contrary to our expectations, emotional entrainment is not associated with this increase. We discuss possible alternative explanations, in particular the influence of public discourse. 相似文献